1 #ifndef foointernalhfoo
2 #define foointernalhfoo
5 This file is part of catta.
7 catta is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as
9 published by the Free Software Foundation; either version 2.1 of the
10 License, or (at your option) any later version.
12 catta is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
15 Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with catta; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 /** A locally registered DNS resource record */
24 typedef struct CattaEntry CattaEntry;
26 #include <catta/llist.h>
27 #include <catta/watch.h>
28 #include <catta/timeval.h>
29 #include <catta/core.h>
33 #include "timeeventq.h"
39 #include "wide-area.h"
40 #include "multicast-lookup.h"
41 #include "dns-srv-rr.h"
43 #define CATTA_LEGACY_UNICAST_REFLECT_SLOTS_MAX 100
45 #define CATTA_FLAGS_VALID(flags, max) (!((flags) & ~(max)))
47 #define CATTA_RR_HOLDOFF_MSEC 1000
48 #define CATTA_RR_HOLDOFF_MSEC_RATE_LIMIT 20000
49 #define CATTA_RR_RATE_LIMIT_COUNT 15
51 typedef struct CattaLegacyUnicastReflectSlot CattaLegacyUnicastReflectSlot;
53 struct CattaLegacyUnicastReflectSlot {
56 uint16_t id, original_id;
60 struct timeval elapse_time;
61 CattaTimeEvent *time_event;
66 CattaSEntryGroup *group;
70 CattaPublishFlags flags;
73 CattaProtocol protocol;
75 CATTA_LLIST_FIELDS(CattaEntry, entries);
76 CATTA_LLIST_FIELDS(CattaEntry, by_key);
77 CATTA_LLIST_FIELDS(CattaEntry, by_group);
79 CATTA_LLIST_HEAD(CattaAnnouncer, announcers);
82 struct CattaSEntryGroup {
86 CattaEntryGroupState state;
88 CattaSEntryGroupCallback callback;
92 unsigned n_register_try;
93 struct timeval register_time;
94 CattaTimeEvent *register_time_event;
96 struct timeval established_at;
98 CATTA_LLIST_FIELDS(CattaSEntryGroup, groups);
99 CATTA_LLIST_HEAD(CattaEntry, entries);
103 const CattaPoll *poll_api;
105 CattaInterfaceMonitor *monitor;
106 CattaServerConfig config;
108 CATTA_LLIST_HEAD(CattaEntry, entries);
109 CattaHashmap *entries_by_key;
111 CATTA_LLIST_HEAD(CattaSEntryGroup, groups);
113 CATTA_LLIST_HEAD(CattaSRecordBrowser, record_browsers);
114 CattaHashmap *record_browser_hashmap;
115 CATTA_LLIST_HEAD(CattaSHostNameResolver, host_name_resolvers);
116 CATTA_LLIST_HEAD(CattaSAddressResolver, address_resolvers);
117 CATTA_LLIST_HEAD(CattaSDomainBrowser, domain_browsers);
118 CATTA_LLIST_HEAD(CattaSServiceTypeBrowser, service_type_browsers);
119 CATTA_LLIST_HEAD(CattaSServiceBrowser, service_browsers);
120 CATTA_LLIST_HEAD(CattaSServiceResolver, service_resolvers);
121 CATTA_LLIST_HEAD(CattaSDNSServerBrowser, dns_server_browsers);
123 int need_entry_cleanup, need_group_cleanup, need_browser_cleanup;
125 /* Used for scheduling RR cleanup */
126 CattaTimeEvent *cleanup_time_event;
128 CattaTimeEventQueue *time_event_queue;
130 char *host_name, *host_name_fqdn, *domain_name;
132 int fd_ipv4, fd_ipv6,
133 /* The following two sockets two are used for reflection only */
134 fd_legacy_unicast_ipv4, fd_legacy_unicast_ipv6;
136 CattaWatch *watch_ipv4, *watch_ipv6,
137 *watch_legacy_unicast_ipv4, *watch_legacy_unicast_ipv6;
139 CattaServerState state;
140 CattaServerCallback callback;
143 CattaSEntryGroup *hinfo_entry_group;
144 CattaSEntryGroup *browse_domain_entry_group;
145 unsigned n_host_rr_pending;
147 /* Used for assembling responses */
148 CattaRecordList *record_list;
150 /* Used for reflection of legacy unicast packets */
151 CattaLegacyUnicastReflectSlot **legacy_unicast_reflect_slots;
152 uint16_t legacy_unicast_reflect_id;
154 /* The last error code */
157 /* The local service cookie */
158 uint32_t local_service_cookie;
160 CattaMulticastLookupEngine *multicast_lookup_engine;
161 CattaWideAreaLookupEngine *wide_area_lookup_engine;
164 void catta_entry_free(CattaServer*s, CattaEntry *e);
165 void catta_entry_group_free(CattaServer *s, CattaSEntryGroup *g);
167 void catta_cleanup_dead_entries(CattaServer *s);
169 void catta_server_prepare_response(CattaServer *s, CattaInterface *i, CattaEntry *e, int unicast_response, int auxiliary);
170 void catta_server_prepare_matching_responses(CattaServer *s, CattaInterface *i, CattaKey *k, int unicast_response);
171 void catta_server_generate_response(CattaServer *s, CattaInterface *i, CattaDnsPacket *p, const CattaAddress *a, uint16_t port, int legacy_unicast, int is_probe);
173 void catta_s_entry_group_change_state(CattaSEntryGroup *g, CattaEntryGroupState state);
175 int catta_entry_is_commited(CattaEntry *e);
177 void catta_server_enumerate_aux_records(CattaServer *s, CattaInterface *i, CattaRecord *r, void (*callback)(CattaServer *s, CattaRecord *r, int flush_cache, void* userdata), void* userdata);
179 void catta_host_rr_entry_group_callback(CattaServer *s, CattaSEntryGroup *g, CattaEntryGroupState state, void *userdata);
181 void catta_server_decrease_host_rr_pending(CattaServer *s);
183 int catta_server_set_errno(CattaServer *s, int error);
185 int catta_server_is_service_local(CattaServer *s, CattaIfIndex iface, CattaProtocol protocol, const char *name);
186 int catta_server_is_record_local(CattaServer *s, CattaIfIndex iface, CattaProtocol protocol, CattaRecord *record);
188 int catta_server_add_ptr(
192 CattaProtocol protocol,
193 CattaPublishFlags flags,
198 #define CATTA_CHECK_VALIDITY(server, expression, error) { \
200 return catta_server_set_errno((server), (error)); \
203 #define CATTA_CHECK_VALIDITY_RETURN_NULL(server, expression, error) { \
204 if (!(expression)) { \
205 catta_server_set_errno((server), (error)); \
210 #define CATTA_CHECK_VALIDITY_SET_RET_GOTO_FAIL(server, expression, error) {\
211 if (!(expression)) { \
212 ret = catta_server_set_errno((server), (error)); \
217 #define CATTA_ASSERT_TRUE(expression) { \
218 int __tmp = !!(expression); \
222 #define CATTA_ASSERT_SUCCESS(expression) { \
223 int __tmp = (expression); \
224 assert(__tmp == 0); \